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Proceedings Paper

Synthesis and characterization of novel photorefractive low molecular weight glasses
Author(s): Christoph Hohle; Peter Strohriegl; Stefan Schloter; Uwe Hofmann; Dietrich Haarer
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Paper Abstract

Seven novel photorefractive glasses have been prepared in an effective four-step synthesis. The low molar mass glasses consist of a triphenylamine-core substituted with two carbazole moieties and a NLO-chromophore (NLO-DCTAs). In a second series of compounds (NLO-DATAs) the carbazole groups are replaced by diphenylamine. The compounds from stable glasses with Tgs of about 120 degrees C and 85 degrees C. The photorefractive properties such as the diffraction efficiency (eta) , the modulation amplitude of the refractive index (Delta) n, and the gain coefficient (Gamma) were determined by means of degenerate four-wave mixing and two- beam coupling experiments. We observed diffraction efficiencies of (eta) equals 90 cm-1. The samples have excellent properties with respect to optical quality and shelf-lifetime.

Paper Details

Date Published: 23 October 1998
PDF: 12 pages
Proc. SPIE 3471, Xerographic Photoreceptors and Organic Photorefractive Materials IV, (23 October 1998); doi: 10.1117/12.328172
Show Author Affiliations
Christoph Hohle, Univ. Bayreuth (Germany)
Peter Strohriegl, Univ. Bayreuth (Germany)
Stefan Schloter, Univ. Bayreuth (Germany)
Uwe Hofmann, Univ. Bayreuth (Germany)
Dietrich Haarer, Univ. Bayreuth (Germany)


Published in SPIE Proceedings Vol. 3471:
Xerographic Photoreceptors and Organic Photorefractive Materials IV
Stephen Ducharme; James W. Stasiak; James W. Stasiak, Editor(s)

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